Syntax and Sample Usage of _Generic in C11
c, c11, generics
Solution
This is a pretty good introduction. Here's the Overview:
Generic selection is implemented with a new keyword: _Generic. The syntax is similar to a simple switch statement for types:`_Generic( 'a', char: 1, int: 2, long: 3, default: 0)` evaluates to 2 (character constants are ints in C).
Basically it works like a kind of `switch`, where the labels are type names which are tested against the type of the first expression (the `'a'` above). The result becomes the result of evaluating the `_Generic()`.
Problem
I heard C11 added generics. I've googled a bit, looked at some articles, understood there's a new keyword ( `_Generic` ) and all. But I can't seem to grasp it all. Is it something like the generics in C# or templates in C++? Can anyone give me a brief explanation of the C11 definition of generics, its syntax and a simple sample usage example?